If you have a bolt action it is simple to bore sight yourself.

1. Remove bolt.
2. Place rifle on some sort of steady suport.
3. Looking thru barrel line up the barrel on some recognizable point about 25 yards away.
4. Without moving rifle adjust scope to same point.

This should get you reasonably close at 25 yards. Then finish off you sighting in at the range as mention already.

Good Luck